3 - x = 10
-x = 10 - 3
-x = 7
x = -7 <===
<h2>follow me please and be my friend..please request</h2>
I can't answer this question without a picture of the lines.
If she made a 90 that means 90 percent aka .90 so multiply that by 60 to get 54 right aka 6 wrong which you could find either by subtracting 54 from 60 or solving for 10 percent bc she got that much wrong and multiply .10x60=6 wrong
